A Facile, One-Step Synthesis for Core–Shell Perovskite Materials via Molten Salt

Levitas, Benjamin; Liu, Zhongyi; Piligian, Spencer; Kakinuma, Katsuyoshi; Gopalan, Srikanth

doi:10.1021/acs.cgd.0c01249

A Facile, One-Step Synthesis for Core–Shell Perovskite Materials via Molten Salt

Journal Article · Thu Apr 01 00:00:00 EDT 2021 · Crystal Growth and Design

DOI:https://doi.org/10.1021/acs.cgd.0c01249· OSTI ID:1992213

^[1]; Liu, Zhongyi ^[2]; Piligian, Spencer ^[2]; ^[3]; Gopalan, Srikanth ^[2]

Boston Univ., MA (United States); Boston University
Boston Univ., MA (United States)
Univ. of Yamanashi, Kofu (Japan)

Core–shell La_0.6Sr_0.4Co_0.2Fe_0.8O₃(LSCF)–La_0.8Sr_0.2MnO₃(LSM) heterostructure crystalline materials have been synthesized in a simple, one-step feeding method via a KNO₃molten salt solvent. Two-phase perovskite composites can be synthesized in times as short as 10 minutes and is demonstrated for the first time in a molten salt. Further, a combination of X-ray diffraction and S/TEM energy dispersive X-ray spectroscopy has been utilized to confirm the formation of an LSM shell on LSCF cores in all samples when adjusting dwell time, core size, weight ratio between core and shell precursors, and weight ratio of powder to salt. Specifically, decreasing the LSCF core size increases core–shell yield. Smaller cores introduce a greater density of facets on the crystal surface and provide more favorable sites for LSM heterogeneous nucleation.

View Accepted Manuscript (DOE)

Research Organization:: Boston Univ., MA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE

Grant/Contract Number:: FE0031205

OSTI ID:: 1992213

Alternate ID(s):: OSTI ID: 1849245

Journal Information:: Crystal Growth and Design, Journal Name: Crystal Growth and Design Journal Issue: 5 Vol. 21; ISSN 1528-7483

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ceramics
core-shell nanoparticles
heterogeneous nucleation
molten salt
molten salt synthesis
perovskite
solid oxide fuel cells

A Facile, One-Step Synthesis for Core–Shell Perovskite Materials via Molten Salt

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